Patents by Inventor Frank Manners

Frank Manners has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Control circuit for a D.C. motor
    Patent number: 4267492
    Abstract: A direct current motor control circuit in which the armature is arranged for reversible connection in a main path for current to flow from a first supply terminal to a second supply terminal through the armature and a current chopper. A pair of switches between which the armature is connected are controllable to effect this reversible connection in the drive mode and to connect the armature across a bridge to permit return current to flow from the second terminal, in either direction through the armature toward the chopper in a regenerative mode, one or more diodes being provided for completing a return path for the return current to flow to the first terminal.
    Type: Grant
    Filed: October 31, 1978
    Date of Patent: May 12, 1981
    Assignee: Lansing Bagnall Limited
    Inventor: Frank Manners